credentials: min/max length check for credentials.

access-key.go

@@ -44,10 +44,10 @@ const (
 )
 
 // isValidSecretKey - validate secret key.
-var isValidSecretKey = regexp.MustCompile("^.{40}$")
+var isValidSecretKey = regexp.MustCompile("^.{8,40}$")
 
 // isValidAccessKey - validate access key.
-var isValidAccessKey = regexp.MustCompile("^[A-Z0-9\\-\\.\\_\\~]{20}$")
+var isValidAccessKey = regexp.MustCompile("^[a-zA-Z0-9\\-\\.\\_\\~]{5,20}$")
 
 // mustGenAccessKeys - must generate access credentials.
 func mustGenAccessKeys() (creds credential) {

web-handlers.go

@@ -311,11 +311,11 @@ func (web *webAPI) SetAuth(r *http.Request, args *SetAuthArgs, reply *SetAuthRep
 	if !isJWTReqAuthenticated(r) {
 		return &json2.Error{Message: "Unauthorized request"}
 	}
-	if args.AccessKey == "" {
-		return &json2.Error{Message: "Empty access key not allowed"}
+	if !isValidAccessKey.MatchString(args.AccessKey) {
+		return &json2.Error{Message: "Invalid Access Key"}
 	}
-	if args.SecretKey == "" {
-		return &json2.Error{Message: "Empty secret key not allowed"}
+	if !isValidSecretKey.MatchString(args.SecretKey) {
+		return &json2.Error{Message: "Invalid Secret Key"}
 	}
 	cred := credential{args.AccessKey, args.SecretKey}
 	serverConfig.SetCredential(cred)